Answer: c. the plow
Explanation:
Around 3100 BC, the Sumerians invented the plow. It is a device that has led to huge progress, primarily in agriculture. In addition to the mentioned function, the plow is also efficient when moving heavy objects. The Sumerians invented several types of plows, but they all had the same purpose. Along with various antique plows, a manual was made that made it easier for users to use.
